You can start by going to www.narpm.org to search their directory of managers.

This is the true organizational and budgeting tool that every investor should be using for their projects.

You can also find real estate investing groups through meetup.com, Facebook, or a Google search.

We will shop for used appliances where we can when we need one… or pick up used cabinets if we can, or search eBay for something smaller,  but going to the extreme of personally shipping something big in internationally for one-off renovation needs seems like a stretch of reasonable.Just like you mention, the number of unknowns would not seem to be worth it to me.Just my 2 cents.Randy  

Try using search keywords "seller financing" or "owner financing" in Realtor.com in your area... 

Is there something like off-market commercial deals where I can search them (like Investorlift or New Western for residential) ? 

Robin Carriger is the organizer and they usually post notifications here on BP.I've posted other lists here several times and can do so again if you need it and can't find in the search function. 

You have the tools and mindset that work with larger scale commercial so I would network until you meet someone who may let you run some of their deals with them and see what they look like in person.

You can also use the search feature (magnifying glass in upper-right) to look at previous conversations.

The easiest is doing a search for REI Meetups.